Messier 107
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Messier 107 or M107, also known as NGC 6171 or the Crucifix Cluster, is a very loose globular cluster close to the equator in Ophiuchus, and is the last such object in the Messier Catalogue.
M107 from Hubble Space Telescope; 3.5′ view
Ophiuchus
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Ophiuchus is a large constellation straddling the celestial equator. Its name comes from the Ancient Greek ὀφιοῦχος, meaning "serpent-bearer", and it is commonly represented as a man grasping a snake.
Messier 107
…Messier 107 or M107, also known as NGC 6171 or the Crucifix Cluster, is a very loose globular cluster close to the equator in Ophiuchus, and is the last such object in the Messier Catalogue. It was discovered by Pierre Méchain in April 1782, then independently by William Herschel in…
Rho Ophiuchi, shown with a surrounding bluish cloud slightly above a pentagon of stars in Scorpius, with the main band of the Milky Way much further to the left
The constellation Ophiuchus as it can be seen by naked eye.
Illustration of Serpens, Ophiuchus and Scorpius in the Leiden Aratea manuscript, around 830 - 840.
Johannes Kepler's 1606 book De Stella Nova in Pede Serpentarii (On the New Star in Ophiuchus's Foot) opened at the page for Ophiuchus.